2312232121 has 4 divisors (see below), whose sum is σ = 2315311744. Its totient is φ = 2309152500.

The previous prime is 2312232107. The next prime is 2312232179. The reversal of 2312232121 is 1212322132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2312232121 - 2⁹ = 2312231609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312232191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1538685 + ... + 1540186.

It is an arithmetic number, because the mean of its divisors is an integer number (578827936).

Almost surely, 2^2312232121 is an apocalyptic number.

It is an amenable number.

2312232121 is a deficient number, since it is larger than the sum of its proper divisors (3079623).

2312232121 is an equidigital number, since it uses as much as digits as its factorization.

2312232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079622.

The product of its digits is 288, while the sum is 19.

The square root of 2312232121 is about 48085.6748002979. The cubic root of 2312232121 is about 1322.3420543861.

Adding to 2312232121 its reverse (1212322132), we get a palindrome (3524554253).

The spelling of 2312232121 in words is "two billion, three hundred twelve million, two hundred thirty-two thousand, one hundred twenty-one".